Terminal for rail bonds



Feb. 25, 1930. w. B. wARDRoP TERMINAL FOR RAIL BONDS Filed May e, 1926 .lill nl Patented Feb. 25,71e3c v wrnLIAiiB. WARDRQR'O'F BARNEsBoRo, PENNSYLVANIA rA TERMINAL Fon RAIL BONDS Appucation inea May. e, 1926. serialv No. 107,236.1 1

l Vv This invention relates to terminals for rail bonds and more particularly to a terminal so .constructed that it is readily recoverable, thus rendering it especially applicablel in light 5 gauge railways of mineswhere therails must v -beconstantly shifted and where accordingly ordinary rail bonds rapidly deteriorate'an'd become useless. 1

v A more specific object of the invention isto 1o provide a split rail bond terminal having VVVmeans whereby it may beexpanded to t an opening formed in the rail bond, the terminal being so formedthat it may be alternately eX- panded and contracted for a great number of times beforeV any tendencyto breakage occurs. These and other objects I attain by the construction shown in the accompanying drawing, wherein for the purpose of illustration-is shown a preferred embodiment of my inv'en-f- 'tion and wherein y J'Figu're 1 is a side elevation of adj oiningrail j Lfsections connected by a-bond constructed in accordance with my invention; i A f .Y y'Figure 2 is an enlarged longitudinal sectional view'therethrough taken on the line f Figure :.3 is anvenlargeclsectional view on the line 34"-3 of Figure 1j; ,f v Figure 4 is a side elevation of the Vterminal 3p removed; Y f Y Figure 5 isi an inner face ofthe terminal. y Referring now more particularly lto the drawings, the terminal comprises -a disk-like 35 jwith one face ofthe web 13 of a rail. Projecting from the flat facejllis a cylindrical l boss 14 which is adaptedto enter an opening` 15 formed in the rail web kfor itsreception The headland boss areprovided withan axiale tapered opening 16 for the receptionof a` cylindro-conic spreader 17, the smaller end of 'which has an axialthreaded extension 1'8 in which `a nut 19 may be engaged. The'nut 19 abuts l,the outer face 2O ofthe head and the.

` head-10 having a flat face 11 for engagemeritV taperedbore of the head and boss has its larger end at the free end of the boss." y

Projectingfrom one side of the head 1 0. is a neck 21 which is of stockyconstruction andl c relatively long. The free end of this neck is in the form of a'socket 22 for the reception of Y the usual flexible bond cable 2 3. The head=10 Y and boss 14 arediametrically split upon ladiameter bisecting thevneck and this split is continued well into the neck and to a point .adjacent the innerend ofthe socket 22, as in. 4 Vdicated at 24. l

In the application of the bond, the boss 14 is yinserted inthe opening 15 after whichthe n v'spreader l17 is inserted and tightened by 601;

means of the nut 19.' This tightening causes the sections of the'head and boss'to spread with the result thatv the side walls of the boss very firmly engage with the walls of the openling 15 tov establish an electricalconnection 65g.

therewith. Since the split permitting separavtion of the sectionsof the head is continuedy well into thev neck, it follows that the amount of movement necessary at the terminal of the split to permit spreading andcontraction of 'mf- "i the bond when applied or removed lwill be very slight, so that the tendency to rupture of the bers of metal is reduced to a minimum rand a bond provided which is highly recoverable andwhich, at the same time, may be very l readilyapplied'to the rail. It will, of course, be obvious that other means of attaching the Y bond andcable 23 to the neck might be pro# vided and I accordingly do not limit myself to theconstruction hereinbefore set forth eX- soga cept as hereinafter claimed.

I claim :e-

A railbond terminal comprising head having upon one side face thereof aboss, the Y head and boss having a tapered bore thelarg- 855; er end of which is disposed at the free end,v face of the boss, a spreading wedge adapted to eX- tend through the bore and having associated therewith means engaging the opposite face of the head whereby it may be shifted `and a 9 q:.i l

n signature.

Yto

neck projecting from one side of the head and having means at its free end whereby a bond cable may be secured thereto, said head and boss being diametrically split by a slot extending well into the neck, the larger end of said spreading wedge being of a diameterless than the diameter of the opening with which the boss is adapted to coact, whereby said wedge element may be loosened and the head and boss contracted and withdrawnv from one side of the rail.

In testimony whereof I hereunto aix my wiLLIAM B. WARDROP. 'A 

